Jazz Bass Bridge MM mod (routin and wirin)

Got a question for any of you TBers that might have modded a Jazz type bass by routing and installing a MM HB in the bridge position. I'm thinking of doing this to my Brice Douglas 5 to get more of an SR type sound. I plan to use a SD SMB-5a pickup. If I do this will the phantom coil in the MM pickup cancel the hum from the neck single coil jazz pickup? I realize I may have to reverse wire one of the pickups due to phase issues. Any advice is appreciated.
BTW I've already tried the series mod and I think it works better for 4 string jazz basses. My B string became TOO big in series.
Thanks,
-Bazz-